Two-stroke-cycle internal-combustion engine.



. G.A;BRUBR.' v

Two s'rnox'n CYCLE INTERNAL GOIfiBUSTIOH ENGINE. APPLICATION FILED APB.8, 1912.

1,045,505.- Patented Ive-v.26; 1912.

2 sums-51mm 1.

. FILL G.A.BRKUER. Two STROKE carom: INTERNAL COMBUSTION ENGINE. APPLICATION FILED APn.a.191z'. 4 1,045,505, Patented Nov.26, 1912.

2 SHEETS-. SHEBT 2.

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i oes sos To aZZ whom it concern;

Be it known that I. GUSTAV rhesus"; Billions, 'a citizen of the GermanEmpire and residing at Chernnitz Saxony Ger many, have invented certain new and useful Improvements in Two --Strol:e- Cycie inte Rial-Combustion Engines, of 'which the towing is a specification, I hit? invention relates to an inte' iul in hnstion engine of the tWo-strol e-cycle "t pe comp: sine; one or more pairs of cy inders mount radially relatively to the r-isle, in which cyiinders the gaseous mixture is (ZOJP pressed on one side of a given piston While a fresh quantity of the mixture is u1ltaneousiy drawn by suction into the cylinder at the other side the same piston.

A primary object of my invention is to provide a two-stroke-sycle engine of this arranged in such manner, in contrudistinction to known engines, that when any piston has completed its suction or back-- Ward stroke, r operation is to deliver the gaseous mixti through astorage Chnllb her into the chembers atthe end Jr its stroi e t livers said gaseous mixture 0 no or pression chamber. Theresult is that beginning of the backward stroke piston the gaseous mixture is pushed Wltib out appreciable pressure by the pistoi of the other cylinders intothe storage c i'nmiher end the; o-e into the compression e; the cylinder. The advantage of this mng'ement is that the gaseous mixture contained in the storage chamber does not train an excessive pressure, but on the other hand remains cohstantiy with u able pressure When itis in rno qucn tly, in engine cco' n i'fililiLlOD the gaseous mixture does n pond in passing from. the storage (9 into the compression side of the cylinder. as when such nnsion occurs there results as is We'd-knot i, loss of power, but ellso separation of th constituents cgaseou-s re whereby the eizpios is weak d. @ne i istrst ye e vention represents; in the accompanyin Figure l is sliver? engine, Fig. 2 I plene' et of Letters Patent.

GERMANY.

ERNAL-COMBUSTIGN ENGINE.

ted Nor 1 1912.

Serial No 889,333.

mg. 3 is :1 Slde elevation otter removing the front of the irume of the engine.

Referring to the crowing, 1 designates the (renk-churnher ivith which one or more pairs of cylinders are rigidly connected. i u'the illustrative embodiment two pairs of cylinders 2, .2 and 2", 2' are so connected. For the sake of clear-mess the ur'ungement of the engine will he described with reference to only one pair of opposite cylinders 2, 2"; the arrangement of the engine with c to the other pair of cylinders 9 will then be readily understood.

and 3' designate the exhaust ports in e the Walls of the cylinders, and 4c, i show the spnrie'plugs of the two cylinders, The

crank-shaft 5, 5 is fixedly mounted in the engine-frame. (3., The crank-chamber 'l revoluhly mounted by means ot the beerings 13, 13 on the stationary crankshaft 5, 5 and provided with a journal 8 rotatahl e u the frame (3. In each of tie four cylinders a piston l1, 11, 1.1, 11 is arranged to iflffflpiflitfiitf the pistons ,being rigidly con meter to piston-rods 10, 10'. 10 and it? terminate in a slotted guide 9 ose of the piston-rods 10, 10 in a ide 9, the piston-rods 10, 10"he try connected together by the guide the nistowrods 10", 10 by the guide J I 5- nk-shaft 5, 5 comprises the 12 the crank-pin 17 of this crun' ut the gulde blocks 15, 15', t nrst slides Within the guide 9 and the'seconc in the guide 9.

The inside ends of the piston-- Those ends or" the cylinders 2, 2" which Es of the crank-chamber.

Bigidly con- :ted to one side of the latter is an a'nmrnher 21 forming a collecting chain; b ror the gases to which the inlet-plpes ,22 leading into the cyhnders are con- Ea-ch of the said pipes 22,22 is he Walls 25, 26 and 25 26, re-

: e chambers 21, 28,

the chamber 28 by the 3%? opening toward the camber 27 is conthe hack-pressure $81 Furthermore, ected with the charm essure were 31 open re awu y from the ignition ends are closed 'ustight by the covers 20, 20 constituting ctively. The chambermg toward the latter chamber, and the chain or 28. with. the chamberQE) by the bacloprcssurevalve 31. The valves30, 31

and 30, are very light and hollow, are, under resilient control and are mounted parallel to the crank-shaft, so that centrifu- I gal-force will not cause any undue influence on the same. It will be apparent that the hollow crank shaft 5, the collecting cl'mmber 21 and the chambers 27 27; form the gassupply means While chambers 28, and 29,

"an or constitute the distribution chambers for I the aseous mixture.

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dor away from the ignition deripe, while the chamber 28' is connected to its suction chamber by the port 23. The Clltllllbt 59.9 zire connected to the middle parts of the .r suective cylinders bythe portsfl'l and 2d, respectively, and by thcp r 32 and. 2-52 to the storage-chamber l 8) which. may, for exal'nple, be formed by four tubelilre portions. I I

The described engine operates. as follows :'-As soon as the piston 11 of cylinder (Fig. 1} starts from its position'shown in the drawing and moves backward in the direction of the arrow 3d, "the valve 30 will. be opened and take up .the position shown theport 23 into the suction chamber of the cyl nder, while the gaseous mixture on the other side of the piston is compressed. The

' suction of the piston being completed, the

\ 'alvefifi isclosed by its controlling spning,

the compression of the gaseous mixture'm' the combustion chamber of the cylinder is completed and ignition takes place. The piston 11 now has the position of the piston 11 in the cylinder 2 in Fig. 1, As soon as This displacement of the mixture will take the piston makes its stroke toward the crankcase after the explosion the gaseous mixture which had previously been sucked in is discharged through the port into the chamber 28, and thence through the valve 81, the port'32 and the storage-chant her into the combustion. chamber of any other cylinder winch 18 at that time directly connected with the strange chamber 38.

place during the greatrr part of the forward-stroke of the pisl n until the Piston opens the port 24-. :n this inoment up to the termination of the stroke of the piston, 2 until the piston reaches the position of piston 11 in Fig. l, the guise Lure delivered from the cyli Ier p H .1(1'130115 23 comiccts the chamber 28 to I the suction chamber at the end of the cylin- 35 of the hollow cranlosliatt Stodischarged. into the combustion chamber'of the cylinder 2,'which is still in connection with the storagechamber 33 through the port 24,, until the latter is again closed by the piston. moving in the direction of the arrow 34- and the compression of the ,gaseous mixture takes place, after which the above described operations are repeated,

' It will be seen that it is always that piston which has completed the suction of the fresh gaseous mixture which will first of all discharge the said mixture through the storage chamber into those cylinders whose compression:chambers are at that time in direct connection with the storage-chamber 33, and that only toward the end of its stroke toward the crank-case will the said piston discharge the mixture to the co'mbus tion chamber of its own cylinder. On the other hand, the gaseous mixture willTit the beginning of the backward-stroke of the piston be exclusively discharged by the pistons pf the other cylinders into the storage-cham- \er, and from this into the combustion chamber in front of the piston. pacity of the suctiomchambcrsof the several cylinders should be soWlesigned that when the gaseous mixture is delivered from the The casuction chamber of one cylinder to its'o'wn V combustionchamber, the gaseous mixture is not subjected to an increase of pressure, and also that afterward no expansion of the 'gaseous mixture on its way from the stor- 'age chamber to'thatparticular combustion chamber will occur. Taking one of the four cylinders, say cylinder 2,, it will'be always the cylinder, say 2", that follows the first one in the direction of rotation which helps to fill the common storage 'clmmber, while the other two cylinders, say 2 and 2', in their, turn will use the "aseous mixture from the storage-chamber. Ihe amount of gase' ous mixture admitted into the storagechamber will always be the same as that of the mixture removed from it. It follows that the'capacity of, the storage'cliamber may be made as small as desired.

The engine-frame 6, which in the illustrative embodiment s arranged vertically, may be arranged in a horizontal or slanting position: a

For preventing the friction of the guide blocks l5, 15 in the guides 9, 9 the former may be provided 'vith ball-hearings or I'OllQl'-lflO{1-llllgS in well-known manner. Moreover. the piston rods 10, 10, 10", 10" may lf Q'llllliQll will: con i of being rigidly connected with guides.

ig-rods instead oted to said disk. Further, the exhaustports may be arranged in the bottom of the cylinders and the spark-plugs somewhat laft- 'erally therein. It will be understood that an engine provided with such modifications would still come within thescope of my invention.

1 claim 1. In an internal combustion engine of the character described, the combination of an engine-frame acrank-shaft secured in the frame, a crank-case rotatable about the crank-shaft, a plurality of workin cylinders closed at both ends and rigidly connected with the crank-case and radially disposed around said crank-shaft, a double act ing piston in each cylinder each piston beingconnected with the crank-shaft by means-ofa piston rod and adapted to r0- tate around said crank-shaft, each cylinder having two gas-inlets one thereof being located at the inward end of the cylinder and the other at such a point of the cylinder that the inlet cannot be closed by the piston when the same has almost completed its inwardstroke, a storage-chamber permanently connected by one of said gas-inlets with each cylinder, gas-supply means connected to the storage-chamber, distributing chambers the number of which corresponds to the number of the cylinders, said distributin chambers being permanently connected with each cylinder by the gas inlets at the inner end of the cylinder and with the gas-supply means by way of non-return valves opening toward -t'he distributing chamber, and with the storage chamber by non-return-valves opening toward the storage.

2. In an internal combustion engine of the character described, the combination of an engine frame, a hollow .cran shaft secured in the frame, a crank-case rotatable about the crank-shaft, a plurality of the working cylinders closed at both ends and rigidly connected with the crank-case, a double-acting piston in each cylinder, each piston being connected with the crank-shaft by means of a piston-rod and adapted to rotate around said crank-shaft, each cylinder having two gas-inlets one located at the inward end of the cylinder and the other at such a point of the cylinder that the inlet cannot be closed by the piston when the same has almost completed its inward-stroke, "a storage chamber permanently connected with each cylinder by one of said gas-inlets said hollow crankshaft being provided with lateral ports, an annular chamber mounted to rotate about the crank-shaft and opening into said lateral ports, distributing chambers, correspondingin number to the number of the cylinders and permanently connected with each cylinder by said gas-inlets and with the said annular chamber by nonreturn alves opening toward the distributing chamber, and with the storage chamber by non-return valves opening toward the storage-chamber.

In testimony whereof, I aflix my signature in the presence of two witnesses.

GUSTAV AUGUST BRKUER. [L. s.]

l/Vitnesses CARL ARTHUR -REICHALT, SIDNEY RICH. 

